CJ750 Gearbox gets a new 3rd and 4th gear - Install 3rd and 4th gear
05 October, 2024
The 3rd gear gets pressed on first. Note the angular position of the gear as it locks into the later 4th gear.
I built this press just for this. I could have bought myself a 20t press, but it takes two much space, and I rarely need it. It was also a lot of fun building it!
The two round holders at the top of the press are designed to accommodate a round bar for increased leverage.
With an oversize of 3/100mm there is still a lot of force required for this. The gears are secured with Loctite 638.
Note the angular position of the 3rd gear to the position of the key.
Once the 3rd gear is aligned (described in Align 3rd and 4th gear), the 4th gear along with the key is pressed on.
Old and new input shaft side by side.
